SYNTHESIS AND THERMAL REACTIONS OF 2-ALKYL(OR ARYL)-1-BENZOYL-3,4-DIHYDRO-2-THIANAPHTHALENES

Article abstract of DOI:10.1016/S0040-4039(01)81978-X

1-Benzoyl-2-methyl-3,4-dihydro-2-thianaphthalene (4a) underwent novel intermolecular 1,4-rearrangement in refluxing toluene to give an enol ether 5a, while rearrangement of 2-phenyl derivative 4e proceeded intramolecularly in refluxing xylene to afford a 1,4-rearranged enol ether 5b.On the other hand, ylides 4a-e were refluxed in alcohols to afford some ring-opened products 10-12.